i need a stopwatch 0-99 7 segment 16F628A

[xxxxxx025]

hi friends
i need a stopwatch 0-99 7 segment , we have 2 buttons ,1 button start-stop,1 button reset

i need 2 help
pls help me

 

[colin55]

Here's the circuit:
**broken link removed**

The program has the counting routine.
You just need a timer and change the buttons to "start" "stop,"

 

[Jon Wilder]

The code should be simple with a timer interrupt. Is it just one display count per second?

 

[xxxxxx025]

Need Your Help Friends About StopWatch 16F628A

hi friends,

Need Your Help Friends About StopWatch 16F628A , this stopwatch count 0-99
i have this circuit pls help me, i need a program pls help me!!

 

[xxxxxx025]

yeap its just one display count per second, pls look at this post

 

[Jon Wilder]

OK...why did you start another thread on the very same subject? Pretty pointless if you ask me.

That being said, the only other thing I need to know is the display you're working with. Is your display a two digit display or is it two individual single digit displays? Also, is your display common anode or common cathode?

 

[xxxxxx025]

this is my lab. project, it is common cathode 4 digit display but we will use 2 digit..

 

[Ian Rogers]

Why don't you start with Nigel's tutorial 10.... Most of this is done for you 2 digit display AND the routines are written... all you need to do is incorporate a switch system and stopwatch function..

Pretty good place to start....

 

[colin55]

You have got the circuit above.
Here's the link to the project: